Gossamer Gear introduced this pack in 2017 and sold it for only a few years and then discontinued it. Volume is 50L, but in size Large it seems to be as big as the Mariposa.

As you can see in the photos, this pack has a floating top pocket. Gossamer Gear adopted that feature for a short time for this pack and the Gorilla, then went back to a top flap.

Note that the Silverback 50 has 2 compression straps on each side, while the Mariposa 60 does not have any side compression straps. This is a big plus.

Go to the Gossamer Gear website to determine fit for size Large. The measured torso length on this pack is 20.25 inches.

Weight is 38.25 oz

Materials and Features:

  • Contoured aluminum frame
  • 210D Robic Nylon body
  • 210D Robic/Extreema Grid reinforcements in high wear areas
  • Air mesh harness lining,
  • Power mesh pad holder
  • Large fabric front pocket
  • 2 durable fabric side pockets, will hold 2 water bottles in one pocket
  • Fitted floating detachable zippered top pocket
  • 2 zippered hipbelt pockets
  • 4 side compression straps
  • Hydration sleeve with 1 center hose port
  • 9-inch extension collar
  • Drawcord top closure
  • Trekking pole holders
  • Removable corrugated Sitlight pad backpanel
  • Sternum strap
  • Ice axe loop
  • Haul loop.

Pack is like-new, little or no signs of use.

Sell for $165 plus shipping. Please include your zip code when you inquire.

Payment by PayPal friends and family.

No PMs please, email me direct at willi_wabbit at bresnan dot net